Ruifang Dong, Joel Heersink, Joel F. Corney, Peter D. Drummond, Ulrik L. Andersen, and Gerd Leuchs Institut für Optik, Information und Photonik, Max–Planck Forschungsgruppe, Universität Erlangen–Nürnberg, Günther-Scharowsky-Str. 1, Bau 24, 91058, Erlangen, Germany ARC Centre of Excellence for Quantum-Atom Optics, School of Physical Sciences, The University of Queensland, Brisbane, QLD 4072, Aus...

We have realized a conical matter wave lens. The repulsive potential of a focused laser beam was used to launch a Bose-Einstein condensate into a radially expanding wavepacket whose perfect ring shape was ensured by energy conservation. In spite of significant interactions between atoms, the spatial and velocity widths of the ring along its radial dimension remained extremely narrow, as also co...

Exciting experiments in the field of atom and molecule optics have lately drawn much attention to the effects involved in the coherent diffraction of particle beams. We review the influence of the finite size of the particles and of their energy level spectrum on the diffraction pattern. In turn, we demonstrate how experimental diffraction measurements allow to determine these quantities of wea...

M. K. Olsen, A. B. Melo, K. Dechoum, and A. Z. Khoury Instituto de Física da Universidade Federal Fluminense, Boa Viagem 24210-340, Niterói-RJ, Brazil ARC Centre of Excellence for Quaqntum-Atom Optics, School of Physical Sciences, University of Queensland, Brisbane, Qld 4072, Australia Instituto Nacional de Metrologia, Normalização e Qualidade Industrial, Rua Sta. Alexandrina 416, Rio Comprido ...

Using continuous radio-frequency waves a coherent beam of atoms can be extracted from a magnetically trapped gaseous Bose-Einstein condensate. These novel atomic beams have matter-wave properties that are very similar to those of laser light in classical optics and are therefore called atom lasers. Furthermore, coupling out atoms from a Bose gas allows one to probe the dramatic changes in the p...

A team of scientists from the Quantum Dynamics Division of Professor Gerhard Rempe at the Max Planck Institute of Quantum Optics (Garching near Munich) has now succeeded to make the first steps in this direction. Using a strongly coupled atom-cavity system, they were the first to observe the so-called twophoton blockade: the system emits at most two photons at the same time since its storage ca...

Ray-Kuang Lee, Elena A. Ostrovskaya, Yuri S. Kivshar, and Yinchieh Lai Nonlinear Physics Centre and ARC Centre of Excellence for Quantum-Atom Optics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, Australian Capital Territory 0200, Australia Department of Photonics and Institute of Electro-Optical Engineering, National Chiao-Tung University, ...

Dario Poletti, 2 Tristram Alexander, Elena Ostrovskaya, Baowen Li, 3 and Yuri S. Kivshar Department of Physics and Centre for Computational Science and Engineering, National University of Singapore, Singapore 117542, Republic of Singapore ARC Centre of Excellence for Quantum-Atom Optics and Nonlinear Physics Centre, The Australian National University, Canberra ACT 0200, Australia NUS Graduate S...

P. Jain,* A. S. Bradley, and C. W. Gardiner School of Chemical and Physical Sciences, Victoria University of Wellington, New Zealand The Jack Dodd and Dan Walls Centre for Photonics and Ultra Cold Atoms, University of Otago, New Zealand ARC Centre of Excellence for Quantum-Atom Optics, Department of Physics, University of Queensland, Brisbane, QLD 4072, Australia Received 24 May 2007; published...

We realize experimentally an atom-optics quantum-chaotic system, the quasiperiodic kicked rotor, which is equivalent to a 3D disordered system that allows us to demonstrate the Anderson metal-insulator transition. Sensitive measurements of the atomic wave function and the use of finite-size scaling techniques make it possible to extract both the critical parameters and the critical exponent of ...